An outwardly masculin,heterosexual male (usually into body sculpting and/or has spikey hair and a 70's porno mustache) who fusses or whines about typically female things like hair care products or cramps.
A man with a vagina
A girly-man

"Thomas is a total Man'gina"
"With the way Mark is crying over that dead poodle you'd think he was a giant Man'gina"
"Rhett had to go home early, his Man'gina hurts"

The Urban Dictionary T-Shirt

Gaining popularity after the movie Step Brothers the word mangina refers to a man with a vagina. The "man" has a physical characteristics of a man expect for no penis and balls. Men with manginas have a strong correlation for being bitches.

David Funk sits when he pees because he has a mangina. David's mangina is causing him to be a real bitch. It's that time of the month for David's mangina.